Definition of else adverb from the Oxford Advanced Learner's Dictionary

Oxford3000

else

adverb
els
 
; els
 
 
(used in questions or after nothing, nobody, something, anything, etc.)1 in addition to something already mentionedWhat else did he say?I don't want anything else, thanks.I'm taking a few clothes and some books, not much else.2 differentAsk somebody else to help you.Haven't you got anything else to wear?Why didn't you come? Everybody else was there.Yes I did give it to her. What else could I do?
Idioms

or else

1 if not
Synonym
otherwise
Hurry up or else you'll be late.They can't be coming or else they'd have called.
2 used to introduce the second of two possibilitiesHe either forgot or else decided not to come.3 (informal) used to threaten or warn somebodyJust shut up, or else!